Frequent question: What is influenced both by genes and by environmental factors?

Like most aspects of human behavior and cognition, intelligence is a complex trait that is influenced by both genetic and environmental factors. … Elements of intelligence include the ability to reason, plan, solve problems, think abstractly, and understand complex ideas.

What environmental factors affect gene expression?

Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal’s genes are expressed, which ultimately affects the animal’s phenotype.

How do genes interact with the environment?

In many genes, different variants (genotypes), alter the expressed outcomes (phenotype) even when exposed to the same environmental exposure. When health outcomes differ by genotype and require one or more environmental stimuli, the health outcome is said to result from a gene-environment interaction.

How are traits influenced by the environment?

Explanation: Environmental factors influence traits in plants and animals. These traits include things like weight, height, size, and color. If a dog does not get proper nutrition and exercise, their weight will be negatively impacted.

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What is the difference between genetic and environmental factors?

Your genes hold the basic instructions for your body to grow and function, but they are far from the only thing controlling your traits. Most traits are shaped both by a person’s genes and by environmental factors. Environmental factors include everything outside of DNA that affects your traits.

What are two environmental factors that are likely to affect gene expression?

In addition to drugs and chemicals, temperature and light are external environmental factors that may influence gene expression in certain organisms.

What factors influence gene expression in humans?

Various factors, including genetic makeup, exposure to harmful substances, other environmental influences, and age, can affect expressivity. Both penetrance and expressivity can vary: People with the gene may or may not have the trait and, in people with the trait, how the trait is expressed can vary.

How do genetic and environmental factors work together to influence temperament?

Similar temperaments within a family may be attributable to shared genetics and to the environment in which an individual is raised. … Instead, many (perhaps thousands) of common gene variations (polymorphisms) combine to influence individual characteristics of temperament.

How does genes and environment affect the development of a child?

Gene-Environment Interactions: The environment a child is exposed to both in utero and throughout the rest of his or her life can also impact how genes are expressed. For example, exposure to harmful drugs while in utero can have a dramatic impact on later child development.

How do genes and the environment interact with each other according to the concept of range of reaction?

According to the concept of range of reaction, genes set definite limits on potential, and environment determines how much of that potential is achieved. … Stated simply, our genes influence our environment, and our environment influences the expression of our genes (Figure 1).

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What is an example of a trait that may stem from both inherited and environmental influences?

Some traits are influenced by both genes and the environment, such as height, weight, skin color, and the risk of cancer.

How do genetics and environment influence the similarities and differences within twins?

Any differences between identical twins is expected to be due to environmental factors since they are genetically identical, whereas fraternal twins only share half of their genes on average. … When a genetic influence is dominant, the identical twins would have more trait similarity than fraternal twins.